unifdef - resolve and remove ifdef'ed lines from C program
unifdef [-clt] [-Dname] [-Uname] [-iDname] [-iUname] ...
unifdef removes ifdefed lines from a file while otherwise
leaving the file alone. It is smart enough to deal with the
nested ifdefs, comments, single and double quotes of C syn-
tax, but it does not do any including or interpretation of
macros. Neither does it strip out comments, though it recog-
nizes and ignores them. You specify which symbols you want
defined with -D options, and which you want undefined with
-U options. Lines within those ifdefs will be copied to the
output, or removed, as appropriate. Any ifdef, ifndef,
else, and endif lines associated with filename will also be
ifdefs involving symbols you do not specify are untouched
and copied out along with their associated ifdef, else, and
If an ifdefX occurs nested inside another ifdefX, then the
inside ifdef is treated as if it were an unrecognized sym-
bol. If the same symbol appears in more than one argument,
only the first occurrence is significant.
unifdef copies its output to the standard output and will
take its input from the standard input if no filename argu-
ment is given.
The following options are supported:
-c Complement the normal operation. Lines that would have
been removed or blanked are retained, and vice versa.
-l Replace ``lines removed'' lines with blank lines.
-t Plain text option. unifdef refrains from attempting to
recognize comments and single and double quotes.
Lines associated with the defined symbol name.
Lines associated with the undefined symbol name.
Ignore, but print out, lines associated with the
defined symbol name. If you use ifdefs to delimit
non-C lines, such as comments or code which is under
construction, then you must tell unifdef which symbols
are used for that purpose so that it will not try to
parse for quotes and comments within them.
Ignore, but print out, lines associated with the unde-
fined symbol name.
The following exit values are returned:
0 Successful operation.
1 Operation failed.
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWbtool |
Inappropriate else or endif.
Man(1) output converted with